Weclome Cnsfsd1 ,
You have found a great place for support and advice on how to handle those difficult siutations that come with being in a relationship with someone with BPD. And sounds like you are in a great place to begin learning. We have a saying around here:
"You can't start making things better until you stop making them worse."
Here's the thing. You aren't the problem. Both of you have patterns of behavior that you use in response to each other and those behavior patterns can cause tension to build, can trigger a sense of rejection in your pwBPD, and aren't healthy for you. It's also important to remember that you cannot change him. No matter what you do, you can't love him enough, you can't fix him enough. He has to fix himself. You can only fix what's going on with you. And on this site, we have ALOT of workshops to help you work on you.
We have lessons on the right side of the page that can help you get started. We also have a workshop board with new communication skills that can help you. To start you off though, here is a link to one of our lessons on Understanding your role in the relationship:
https://bpdfamily.com/message_board/index.php?topic=56206.msg913188#msg913188